Characteristic of fluorescence spectroscopy response of tetrakis (4-sulfonatophenyl) porphyrin doped polyaniline toward Fe3+ ion


  • Chatr Panithipongwut kowalsk Department of Materials Science, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
  • Meatawadee buntee
  • Prasit Pattananuwat Petrochemistry and Polymer Science, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand



Polyaniline, Tetrakis (4-sulfonatophenyl) porphyrin;, Fluorescence sensing, Fe3 detection


Here, we report a selective colorimetric chemosensor toward Fe3+ ion detection by the combination of sensitizer and hole transport consisting of polyaniline and tetrakis (4-sulfonatophenyl) porphyrin. Interestingly, the presence of tetrakis (4-sulfonatophenyl) porphyrin moiety on polyaniline can enhance the optical limiting properties of polyaniline, allowing the fluorophore signal for chemical sensor. The performance sensing behaviors toward metal ion are observed by the ultraviolet-Visible and fluorescence properties. The sensing of polyaniline-tetrakis (4-sulfonatophenyl) porphyrin toward Fe3+ ion exhibits a linear response in the concentration range of 0.01 M to 1.0 × 10-4 M over the other transition metals (Cu2+, Ni2+, Zn2+, Pb2+, Cd2+, Mn2+, B2+ and Ag+). A turn-off color of fluorescence emission can be applied for the rapid visualization of Fe3+ ion. The effective response of pH-independent Fe3+ ion sensing of polyaniline-tetrakis (4-sulfonatophenyl) porphyrin by quenching fluorescence reveals sufficiency in range of 4.0-12.0.  


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How to Cite

C. . Panithipongwut kowalsk, M. . buntee, and P. Pattananuwat, “Characteristic of fluorescence spectroscopy response of tetrakis (4-sulfonatophenyl) porphyrin doped polyaniline toward Fe3+ ion”, J Met Mater Miner, vol. 31, no. 3, pp. 143–151, Sep. 2021.



Original Research Articles